Abstract: One or more processors may be configured to receive, via a radio from one or more sensors, one or more streams of sensor values indicating: (1) accelerations of a boxer's arm within a first range of acceleration, measured by a first acceleration sensor, (2) accelerations of a boxer's arm within a second range of acceleration, measured by a second acceleration sensor, and (3) rotation of the boxer's arm measured by a gyroscope sensor. The one or more processors may be configured to determine, based on the received sensor values from the first acceleration sensor, whether a punch landed but not to measure a force or velocity of the punch. The one or more processors may be configured to determine, based on the received sensor values from the second acceleration sensor, at least one of a force or a velocity of the punch but not to detect whether the punch landed.

Abstract: Sensor systems and methods for quantitative assessment of sports performance are disclosed. In one embodiment, a boxing data server comprises a memory storing predetermined profiles of arm acceleration or rotation over time for one or more types of punches, a radio for communicating with one or more sensors on one or more boxers, and one or more processors. The one or more processors may be configured to receive, via the radio from the one or more sensors, one or more streams of sensor values indicating: (1) accelerations of a boxer's arm within a first range of acceleration, measured by a first acceleration sensor, (2) accelerations of a boxer's arm within a second range of acceleration, measured by a second acceleration sensor, and (3) rotation of the boxer's arm measured by a gyroscope sensor. The one or more processors may be configured to determine, based on the received sensor values from the first acceleration sensor, whether a punch landed but not to measure a force or velocity of the punch.